Unit heater and ventilator



Nuv. 29, 1932. E. ANDERSON 1,839,538

UNIT HEATER AND VENTILATOR Filed June 12. 1930 6 Sheets-Sheet l T QM T TA TTORNEY Nov. 29, 1932. E. L. ANDERSO N UNIT HEATER AND VENTILATORFiled June 12. 1930 6 Sheets-Sheet 2 TOR EDWARD L fl/VDFESON,

A TTORNEY Nov. 29, 1932. E. ANDERSON 1,339,588

UNIT HEATER AND VENTILATOR Filed June 12, 1950 6 Sheets-Sheet 3 INVENTORI4 2 Emu 42p L. nwu-na-w/vv z ijlvwpfjiiwg,

A TTORNEY Nov. 29, 1932. E. ANDERSON 1,839,533

UNIT HEATER'AND VENTILATOR Filed June 12. 1930 6 Sheets-Sheet 4 IN VENTOR EDWflED L ANDERSON.

A TTORNEY Nov. 29, 1932.

Filed June 12. 1950 e Sheets-Sheet 5 [N VEN TOR EDWflED 1. ANDf/E 501% ATTORNEY Nov. 29, ANDERSON I 7 1,889,588

UNIT HEATER AND VENTILATOR Filed June 12. 1950 6 Sheets-Sheet e FIG.7

9 11 i Q INVENTOR v 4 t 4 l A TTOR NE Y the Figure 2;

Patented Nov. 29, 1932. v

LLANDEBSON OF GROSSE ILE, MICHIGAN, ASSIGNOB TO AMERICAN BLOW'EBCORPORATION, OF DETROIT,

MICHIGAN, A CORPORATION OF DELAWARE UNITHEATEE AND VENTILATOBApplication filed June 12, 1930. Serial No. 460,617.

My invention relates to ventilators. It is the object of my invention toprovide a unit heater and ventilator having a broad narrow air streamfor delivery of fresh or heated air or for recirculated air. 7

It is my object to provide a line flow fan in a unit heater andventilator in which the axis of the fanextends parallel to the majorwidth of the inlet opening and of the outlet unit heaters and openingandthe air enters the side of the fan and makes its xit through the sideof the fan. 6

It is a'further object to provide a unit heater and ventilator in whichthere is a straight line flow in a single plane of all of air, whetherfresh air, cold air, heated air, or recirculated air.

It is a further object to provide such a unit heater and ventilator witha single control damper for inlet air and recirculated air and a singleby-pass damper.

It is a further object to provide a unit heater and ventilator with aseparate fan compartment, a separate heater compartment, a separatemotor compartment and a separate control compartment accessible throughindependent doors.

Referring to the drawings:

Figure 1 is a front elevation of the unit heater and ventilator casing;

Figure 2 is a section on the line 22 of Figure 3;

Figure 3 is a section on the line 3-3 of Figure 4 is an end elevation ofthe fan with the axle in section and one side of the fan partiallybroken away;

Figure 5 is an enlarged section through one portion of the line flowfan;

Figure 6 is a front elevation of the unit Th with a single door andwithout the side coml partment;

Figure 7 is a section of one end of the unit without the sidecompartment but with the motor compartment showing the arrange ment ofthe damper and steam controls and method of support of the motor. I r YReferring to the drawings in detail, 1 is a front wall of the casinghaving side walls 2 and 3 and a rear wall 4 which has an air inletopening 5. The front wall has a recirculaion air grille 6. The frontwall is provided with a fan door 7, a pair of heater compartment doors 8and 9, a motor compartment door 10 and a control compartment door 11.Interiorly the casing is divided into a motor compartment 12, a controlcompartment 13, a fan compartment 14 and a heater compartment 15. In themotor compartment is a motor 16 suspended from a motor base 17, on theledges 18 and 19 which are respectively mounted on the side walls 2 anda partition wall 20. x

This motor base serves as a separating partition between the motorcompartment 12 and the control compartment 13. The motor 16 has itsshaft 21 extended laterally through the partition 20 into the fancompartment 14 where it is supported with the depending brackets 22 and23 that are respectively mounted on the rail 24 and the partition 25.The partition 25 is supported by the rails 24 and 26. a

On this shaft 21 are mounted a series of sections of a line flow fan inwhich the maximum diameter is many times smaller than the maximumlength. The sections are comprised of end plates 27 which are bowed orbulged at their centers at 28 and are attached to the next adjacentplates so as to form a locking engagement with the shaft. Arcuate fanblades as at 29 extend parallel to the major axis of the fan.

This fan is located adjacent the fresh air inlet opening 5. This openingextends from a point approximately opposite to the axle 21 of the fan tothe floor. Thus, the distance between the axle 21 and the floor plate 30is more than twice the diameter of the fan.

e air is guided inwardly from the area inet opening 5 and upwardly by apartition wall 31 which has an arcuate bulge 32 for accommodating theperiphery of the fan where the blades 29 are returning from the outletof the passageway through which air is flowing to the inlet 5 thusscreening the blades and reducing back flow and impeding of the air asit moves inwardly and upwardly.

The inlet of the air through the opening 5 is controlled by aquadrant-shaped damper plate 33. This plate engages the partition plate31 and a shoulder 34 when it is in its recirculating position. When itis in its fresh air position it engages the shoulder 34 and thepartition 35 which forms the other side of t e air inlet duct oppositeto the walls 31 and 32. This damper 33 is controlled by any suitablemeans and may be operated as a fresh air, recirculated air, or air.mixing damper. It is journaled on short axles 36 in the partition 20 andin a part of the side wall 3 of the'casing. It is operated through bevelgears 37 and 38 and shaft 39 which terminates in a handle 40 in thecontrol comartment. The damper may be controlled y any suitable means,either by handle or an automatic device.

The partitions 31, 32 and 35 are supported in the transverse partition25 which has an aperture 41 for receiving the air guided by thesepartitions 31, 32 and 35. This air may either flow through the by-passarea 42 and thence out the outlet grille 43 to one side of the partition44 as it is guided by the swinging damper 45 that is hinged at 46 at thebottom of the partition 44; or it may pass over the radiator 47 withinthe partition 44, in which event the damper 45 will be resting againstthe stops 48 carried by the side walls of the casing, or a part of theair may be passed through the area 42 and the remainder through theheater 47. This radiator is provided with an inlet pipe 49 having acontrol valve 50 operated by the handle 51. The outlet line from theradiator is designated 52. Anv form of radiator or control may beemployed. In the event automatic controls are utilized there is amplespace to accommodate them both for the motor dampers and radiator withinthe control compartment 13. The damper 45, for instance, is regulated bythe handle 53 within the control compartment 13..

The form of easing shown in Figure 6 has a single door and does not havethe side compartments in which the motor and the regulating parts arelocated. In Figure 7 a casing similar to that of Figure 6 is shown. but

with the motor compartment partly separated" and distinguished from themain fan compartment.

In this form the damper 33 extends the full width of the casing andinstead of being adjusted by means of the handle 40, located incompartment 13. it is adjusted by means of a handle 40a located on theend of a shaft 36a, similar to shaft 36 and in line with the shaft 36,as shown in Figure 7. The shaft 36 and the shaft 36a serve as bearingsfor one end of the damper. In other respects the structural features ofthese two forms are the same as those found in the other form.

It will be understood that I desire to comprehend within my inventionsuch modifications as may be necessary to adapt it to varying conditionsand uses.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is:

1. In a unit heater and ventilator, a heating element, a casing havingan inlet and outlet opening, and a fan having blades extending acrossthe inlet adapted to take air through the inlet opening through thesides of the fan and discharge it through the other side of the fanthrough the outlet opening without the air deviating from the same planeof movement.

2. In a unit heater and ventilator, a casing having an inlet opening andan outlet opening, a fan having a length many times the diameterthereof, said fan comprising a plurality of arcuate blades, end platestherefor, and means for directing air from the inlet through the side ofthe fan, and means for directing air to the outlet from the other sideof the fan as the air travels therethrough in the same plane, a heaterin said casing, and means for controlling the movement of the air eitherover the heater to one side of it or both over it and to one side of it.

3. In a unit heater and ventilator, a casing having an air inletopening, a recirculation opening and an exit opening, a fan having itsmajor axis parallel to the major axis of said openings and its lengthgreater than the diameter, means for directing air to the same entrancearea of said fan from either the inlet opening or the recirculationopening, means of selecting the air from either the inlet opening or therecirculation opening, means of directing the air from the fan soselected to the outlet opening, and a heater in said casing.

4. In a unit heater andventilator, a casing having an air inlet opening,a recirculation opening and an exit opening, a fan having its major axisparallel to the major axis of said openings and its length greater thanthe diameter, means of directing air to the same entrance area of saidfan from either the inlet opening or the recirculation opening, means ofselecting the air from either the inlet opening or the recirculationopening, means of directing the air from the fan so selected to theoutlet opening. a heater in said casing, and means of diverting said airdelivered by the'fan either over the heater or to one side of it orboth.

5. In a. unit heater and ventilator, a casing having an inlet opening, arecirculation open and an exit opening, a line flow fan adapted toreceive air through one side and discharge it through the other sidewhile the alr moves in the same plane, means of selecting whether theair will enter through the inlet opening or through the recirculationopening, means for controlling the air so selected, a casing adjacent tosaid fan serving to guide the air to it and from it, and a swingingdamper above said casing, a radiator in one side of said casing, apartition separating said radiator from the other side of the casingforming a by-pass passageway whereby said air from the fan may be diverted either over the radiator, around it or both around it and throughit.

6. In a unit heater and ventilator, a rela- I tively shallow and longcasing, a line flow fan mounted therein, said casing having bottom inletand recirculation openings and a top outlet opening with the axis of thefan parallel to the major diameters of said openings, means for guidingthe air into one side and out of the other side of said fan withoutchanging the plane of movement of the air as it enters from the inlet orrecirculation openings and is discharged out of the outlet openingwherebyair is delivered in a broad narrow stream from openings ofcorresponding form, a swinging bypass damper fan mounted therein, saidcasing having bottom inlet and recirculation openings and a top outletopening with the axis of the fan parallel to the major diameters of saidopenings, means for guiding the air into one side and out of the otherside of said fan without changing the plane of movement of the air as itenters from the inlet or recirculation openings and is discharged out ofthe outlet opening whereby air is delivered in a broad narrow streamfrom openings of corresponding form, a swinging bypass damper above saidfan. a radiator and bypass partition associated therewith whereby airfrom the fan may be delivered in a straight line flow either over theradiator to one side of it or both before making its exit through theoutlet opening, and a mixing chamber between said bypass and radiator onthe one hand and the outlet opening on the other.

8. In a unit heater and ventilator, a casing having an inlet opening andan outlet opening, a fan having alongth many times the diameter thereof,said fan comprising a plurality of a-rcuate blade's,end plates therefor,and means for directing air from the inlet through the side of the fan,and means for directing air to the outlet from the other side of the fanas the air travels therethrough of it or both over it and to one side ofit,

or introducing any part of the air from either inlet.

In testimony whereof, I aflix my signature.

EDWARD L. ANDERSON.

